Results 101 to 110 of about 4,788 (230)
A Three‐Step Route to Functionalized Pyrrole‐2,5‐Dicarboxylic Acids from Galactaric Acid
ChemSusChem, Volume 19, Issue 8, 28 April 2026.Galactaric acid (GalA) has been used as substrate for a library of N‐substituted pyrrole‐2,5‐dicarboxylic acids (PDCAs). Existing routes to N‐substituted PDCAs require many steps or lack product isolation. We present a simple, scalable three‐step synthesis from GalA via a 2‐pyrone salt, giving isolated PDCA derivatives in high yield without ...
Giacomo Trapasso +3 more
wiley +1 more source
ChemSusChem, Volume 19, Issue 8, 28 April 2026.Heterogeneous catalysis has historically been developed in the gas phase, however, we have found it pertinent to highlight solvent effects that must be accounted for in liquid environments. Condensed phase catalysis, like that in biomass, petroleum and the conversion of CO2, stands to benefit from the typically overlooked discussion regarding the ...
Jim B. Floyd +3 more
wiley +1 more source
Synthesis and disinfection effect of the pyridine-4-aldoxime based salts [PDF]
, 2015 PubMed ID: 25719739A set of new quaternary ammonium compounds based on pyridine-4-aldoxime was synthesized, characterized with analytical data (NMR, EA, HPLC, MS) and tested for in vitro antimicrobial activity (antibacterial, antifungal) and cytotoxicity.
Doležal, Martin +6 more
core +3 more sources
European Journal of Organic Chemistry, Volume 29, Issue 15, 22 April 2026.Threefold reduction of 9,10,11‐triptindanetrione with LiAlH4 or NaBH4 yields exclusively the C3‐symmetric triol, suggesting an intracomplex (“rolling”) mechanism. However, use of LiAlH4/LiAlD4 (1 : 1) reveals a preceding hydride exchange. Mechanistic implications are discussed including the reduction of the related diketone.
Thorsten Hackfort +5 more
wiley +1 more source
Preparation of indole alkaloids via 1,4-dihydropyridine stage or cyano-masked iminium intermediates [PDF]
, 2004 Methods to synthesise substituted pyridine derivatives utilising 1,4-dihydropyridines were studied. Addition of nucleophiles to N-alkyl pyridinium salts and application of the products to alkaloid synthesis were investigated.
Putkonen, Tiina
core
Direct Synthesis of Amides from Carboxylic Acids and Amines Using B(OCH2CF3)3 [PDF]
, 2013 B(OCH2CF3)3, prepared from readily available B2O3 and 2,2,2-trifluoroethanol, is as an effective reagent for the direct amidation of a variety of carboxylic acids with a broad range of amines. In most cases, the amide products can be purified by a simple
Lanigan, RM, Sheppard, TD, Starkov, P
core +1 more source
Advanced Synthesis &Catalysis, Volume 368, Issue 8, 15 April 2026.Small aromatic ligands are used to synthesize Ni particles between 1 and 4.4 nm. After deposition on various supports, an alkylating agent and subsequent reduction procedure are used to remove the ligands. On SiO2, the Ni particles remained small, but on Al2O3 they sintered severely.
Bram T. Kappé +6 more
wiley +1 more source
Effects of MDMA on blood glucose levels and brain glucose metabolism [PDF]
, 2007 Purpose This study was designed to assess changes in glucose metabolism in rats administered single or repeated doses of MDMA. Methods Two different experiments were performed: (1) A single-dose study with four groups receiving 20 mg/kg, 40 mg/kg, saline
Arango, C. +5 more
core +2 more sources
European Journal of Organic Chemistry, Volume 29, Issue 14, 15 April 2026.Organic azides are readily reduced to amines under mild conditions by ammonia borane complex, catalyzed by a low loading level of reusable Au nanoparticles supported on TiO2. We present the first protocol for the chemoselective reduction of organic azides to amines by ammonia borane complex. In the presence of a low catalytic amount of Au nanoparticles
Elisavet‐Maria Zantioti‐Chatzouda +5 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2011 以2-巯基苯甲酸、取代苯胺和2-甲砜基-4，6-二甲氧基嘧啶为原料，经酰氯化、酰胺化、还原、亲核取代反应合成了一系列N-取代苯基-2-（4，6-二甲氧基-2-嘧啶硫基）苄胺类化合物，经氢核磁共振光谱、红外光谱、质谱和元素分析确证了它们的结构.
CHENYi-fei(陈一飞) +3 more
doaj +1 more source